[danans]

California does subsidize upgrades to gas and water heaters and insulation. Check out https://www.energyupgradeca.org/en/save-energy/home/take-con...

I'm in the bay area just replaced my furnace, water heater, and insulated ducts (an 11k job), and I'm expecting a $2800 rebate from the BayREN program (the local program that implements Energy Upgrade California).

https://www.bayareaenergyupgrade.org/program-overview